Toilets

Abstract

A hinge arrangement for the lid and seat of a toilet is disclosed. Hinge pins extend outwardly from lugs on a bowl unit of the toilet through corresponding openings in flanges on the seat and lid and are provided with cam surfaces co-operating with corresponding surfaces on the lid. The co-operating cam surfaces generate frictional forces when the lid is raised so that the lid will tend to stay in a position to which it has been raised. The cam surfaces also define open and closed detent positions in which the lid is positively retained. The seat can be hinged freely when the lid is raised and is trapped against the bowl unit when the lid is closed.

I claim: 
     
       1. A toilet having a bowl unit including a bowl, at least one of seat member and a lid member, hinge means coupling side member to the bowl unit and defining a hinge axis permitting movement of the member between raised and lowered positions with respect to the bowl, and cam means arranged to co-act as the said member is moved between its said raised and lowered positions and generate frictional forces inhibiting free movement of the hinge means about said axis so that said member will tend to remain in a raised position to which it has been moved, wherein said hinge means comprises first and second hinge pins disposed in positions spaced along said axis and each extending between a lug on the bowl unit and a co-operating flange on said lid or seat member, each said pin being fixed against turning with respect to one of the lug and flange, and wherein said cam means comprises, in association with each said hinge pin, first cam surfaces formed on the other of said lug and flange and second cam surfaces on said pin, said flanges on the lid or seat membe being disposed outwardly of the lugs on the bowl unit and the cam surfaces being shaped to cause portions of said flanges adjacent the pins to be forced outwardly as said cam surfaces co-act upon movement of said lid or seat member between its said raised and lowered positions, producing tension stresses in said lid or seat memer that tend to urge said cam surfaces toward one another and generate said frictional forces inhibiting free movement of the hinge means. 
     
     
       2. A toilet as claimed in claim 1, wherein said cam means are shaped to provide at least one detent location corresponding to one of a fully open or a fully closed position of the lid or seat memer for positively retaining the member in said position. 
     
     
       3. A toilet as claimed in claim 1, wherein said second cam surfaces formed on said pin comprise two pairs of cam surfaces with the surfaces in each pair parallel to one another and at right angles to the surfaces of the other pair, and wherein said first cam surfaces comprise a pair of parallel cam surfaces adapted to co-operate with either of the pairs of cam surfaces on the pin, whereby said cam means define two detent locations substantially at right angles to one another, one of said locations corresponding to a fully closed position of said lid or seat member and the other detent location corresponding to a fully open position of said lid or seat member. 
     
     
       4. A toilet as claimed in claim 3, wherein wach said pin is a separate component having first and second end portions and an intermediate portion defining said cam surfaces, said end portions being received in respective openings in the relevant co-operating lug and flange, one said end portion and the opening in which it is received being circular while the other end portion and opening are non-circular for retaining the pin against turning. 
     
     
       5. A toilet as claimed in claim 1, having both a seat member and a lid member coupled to the bowl unit by said hinge means with the seat member inwardly of the lid member, wherein said hinge pins extend outwardly from said lug means through corresponding openings in respective flanges on the lid and seat members, each said pin being fixed against turning with respect to said lug while permitting turning of the seat member and lid member with respect to said pins, and wherein said first cam surfaces are formed on said flange of the lid. .Iadd. 
     
     
       6.  A toilet having a bowl unit including a bowl, at least one of a seat member and a lid member, hinge means coupling said member to the bowl unit and defining a hinge axis permitting movement of the member between raised and lowered positions with respect to the bowl, and cam means arranged to co-act as the said member is moved between its said raised and lowered positions, wherein said hinge means comprises first and second hinge pins disposed in positions spaced along said axis and each extending between a lug on the bowl unit and a co-operating flange on said lid or seat member, each said pin being fixed against turning with respect to one of the lug and flange, and wherein said cam means comprises, in association with each said hinge pin, a first pair of parallel cam surfaces formed on the other of said lug and flange and a second pair of parallel cam surfaces on said pin, said first and second pairs of cam surfaces being arranged to lie mutually parallel and provide a detent location when said lid or seat member is in its said lowered position, whereby said member is positively retained in said lowered position. .Iaddend. .Iadd.7. A toilet as claimed in claim 6, wherein the flanges on the lid or seat member are disposed outwardly of the lugs on the bowl unit and wherein said cam surfaces are shaped to cause portions of said flanges adjacent the pins to be forced outwardly as said cam surfaces co-act upon movement of said lid or seat member between its said raised and lowered positions, producing tension stresses in said lid or seat member that tend to urge said cam surfaces 
     
     
        toward one another. .Iaddend. .Iadd.8.  A toilet as claimed in claim 6, wherein each said pin is a separate component having first and second end portions and an intermediate portion defining said second cam surfaces, said end portions being received in respective openings in the relevant co-operating lug and flange, one said end portion and the opening in which it is received being circular while the other end portion and opening are non-circular for retaining the pin against turning. .Iaddend. .Iadd.9. A toilet as claimed in claim 6, having both a seat member and a lid member coupled to the bowl unit by said hinge means with the seat member inwardly of the lid member, wherein said hinge pins extend outwardly from said lugs through corresponding openings in respective said flanges on the lid and seat members, each said pin being fixed against turning with respect to said lug while permitting turning of the seat member and lid member with respect to said pins, and wherein said first cam surfaces are formed on said flanges of the lid. .Iaddend.